Washing machine drive



H. D. BROTMAN WASHING MACHINE DRIVE May 3, 1949.

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. WASHING MACHINE D'RIVE Filed Jan. 4, 1946' I 7 Sheets-Sheet 2 XI 11/lI/IIII IN V EN TOR.

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WASHING MACHINE DRIVE Filed Jan. 4, @946 v 7 Sheets-Sheet 4 y 1949- H.D. BROTMAN 2,468,919

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H. D. BROTMAN WASHING MACHINE DRIVE May 3, 1949.

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WASHING MACHINE DRIVE Filed Jan. 4, 1946 7 Shets-Sheet 7 r LL 117 W 144193A v g W w I [a 2-5 a Q :74 17 as: 22

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'of drying the clothes.

.Patented May 1949 UNITED: srArEs PATENT OFFICE WASHING MACHINE DRIVEHyman D. Brotman Detrolt, Mich. Application January 4, 1946, Serial No.639,065

1 The invention relates to clothes washing machines and it hasparticular relation to a ma chine of automatic character having adefinite cycle of operation.

In certain respects the invention is related to and constitutes animprovement over that em-v bodied in my copending application forpatent,

Serial No. 573,362, filed January 18, 1945. In the copending applicationfor patent the washing machine includes a clothes receiving cylinderwhich is rotated in one direction throu'gh'a plurality of revolutionsand then in the other dithis operation continues through the washing andrinsing stages. After completion of the last rinsing operation, thecylinder is rotated at a rela-- tively high speed in one directionforthefpurpose The same general principle of operation is embodied inthe present invention in that the cylinder is first rotated in onedirection and then in the other through the washing and rinsing stages,and then is rotated in one:

high speed for drydirection only at a relatively ing the clothes. V

An important object of the present invention is to provide an improvedwashing machine having power operated drive means for rotating thecylinder together with means for transmitting from the drive means tothe clothes receiving cylinder rotational motion at slow speedrepeatedly first in one direction and then in another direction througha predetermined slow speed stage, the machine also being provided withhigh speed means for transmitting from the drive means to the cylinderrotational motion at relatively high speed in a single direction, theconstruction and operation being such that the high speed means is notbrought into operation until after theslow Claims. (c1. 74-1) provide animproved washingmachine of this type wherein a simpler and lessexpensive means is provided for effecting the periodic reversal ofrotation of the cylinder.

Another object of the invention is to provide an improved reversingmechanism having alternately engageable clutches wherein means are 4provided for positively initiating a releasing movement of each Tclutchat a predetermined time.

Another objectof the invention is to provide an improved type of clutcharrangement wherein rection through a plurality of revolutions, and

Just preceding the time the clutch element is to be shifted, springmeans for moving the clutch speed stage and at a time when the cylinderis rotating at slow speed in the same direction as it rotates at highspeed. Preferably this controlled operation of the cylinderfrom theprimary drive means, such as an electric motor, is accornplished byshifting the drive from a slow speed gear means to a high speed gearmeans in such manner and at such time that the shift will occur onlyafter the slow speed stage when the slow is energized so as to effectrapid movement of the clutch element.

Another object of the invention is to provide in a mechanism of the typedesignated a means operating automatically to prevent rotation of thecylinder at the high, drying speed excepting when the cylinder isturning in the same direction at the end of the last rinsing stage asthe cylinder is to rotate in the drying stage.

Another object of. the invention is to provide an.

improved, resilient connecting means between the driving unit and theclothes washing cylinder.

- Another object of the invention is to provide an driving unit for anautomatic washing machine constructed according to one form of theinspeed gear means is rotating in the same direction as the high speedgear means.

A further object of the present invention is to vention;

Fig. 2 is a cross-sectional view taken substantially along the line 2-2of Fig. 1;

Fig. 3 is a cross-sectional view taken substantially along the line 3-3of Fig. 2;

Fig. 4 is a fragmentary cross-sectional view illustrating a clutchsynchronizing look as seen in the direction indicated by the arrow 4 inFig. 2;

Fig. 5 is an end view partly in section as seen from the right side ofFig. 4;

Fig. 6 is a cross-sectional view taken substantially along the line 8-6of Fig. 1;

Fig. '1 is a cross-sectional view taken substantially along the line 1-1of Fig. 2;

Fig. 8 is an end view on a larger scale of one of the spring actuatingcams for movingthe reversing clutch shown on the lower cam shaft in Fig.2;

Fig. 9 is an end view of the cam for positively initiating movement ofthe reversing clutch and which is also mounted on the lower cam shaft inFig. 2 to the left of the spring actuating cams;

Fig. 10 is a view of the cam shown by Fig. 9 as seen along the lineIll-i0 of Fig. 9;

Fig. 11 is a view similar to Fig. 10 but showing the cam as seen whenturned through 90;

Fig. 12 is a side view of the cam arrangement for operating the highspeed clutch;

Fig. 13 is an end view of the construction shown by Fig. 12 as seenalong the line l3-l3 of Fig. 12;

Fig. 14 is a view of one of the spring actuating cams as seen along theline 14-44 of Fig. 12;

Fig. 15 is an end view of the other spring actuating cam as seen alongthe line l5-l5 of Fig. 12;

Fig. 16 is a view of one of the cam elements as seen along the linel'6l5 of Fig. 12;

Fig. 1'1 is a cross-sectional view on a larger scale taken substantiallyalong the line 11-!1 of Fig. 18 is a cross-sectional view takensubstantially along the line iii-I8 of Fig. 1;

Fig. 19 is a cross-sectional view taken substantially along the line19-19 of Fig. 17;

Fig. 20 is a cross-sectional view taken substantially along the line20-20 of Fig. 17;

Fig. 21 illustrates a development of the water control cam and fingersadapted to co-operate therewith; and,

Fig. 22 illustrates a vertical section of the drive pulley for operatingthe driving unit.

Referring to Fig. 1. a part of the washing machine cabinet is indicatedat 1'0 and such cabinet may include two compartments divided bypartition means ll, That compartment to the left of the partition IIcontains a tub and a rotatable cylinder such, for instance, as embodiedin my copending application for patent, while the compartment to theright of the partition provides a space for a drive unit indicatedgenerally at l2. This drive unit generally comprises a'casing [4 havinga plurality of ears l5 secured by bolts 18 to the partition. Hence, thedrive unit may be readily released from the partition merely byreleasing the bolts.

For driving the unit, an electric motor is provided but not shown, andthis motor drives a belt l8 trained about a relatively large pulley l9which is secured to one end of a shaft 20 journalled in bearings 2| and22 provided in opposed walls of the casing. Within the casing, as bestshown by Fig. 2,-the shaft 20 has a worm 24 meshing with a worm wheel 25which is keyed as indicated at 26 to a shaft 21 disposed crosswise ofthe shaft 20 and above it. Such shaft 21 has one end journalled in aboss portion 28 forming a part of one of the walls of the casing whilethe other endof the shaft is journalled in a boss portion 29 integralwith a pan or side cover element3ll secured to the casing by bolts 3|. 1i

The shaft 21 is provided with spaced bevel gears and 36 which are looseon the shaft and such bevel gears respectively have clutch teeth 31 and4 38 on their adjacent end faces. Each of these clutch type bevel gearsis adapted to be engaged by a clutch sleeve 40 splined on the shaft 21so that the sleeve may be axially moved on the shaft while being driventhereby and such sleeve has clutch teeth 4| and 42 on opposite ends forengaging the teeth 31 and 38. From this it follows that if the clutchsleeve is moved in one direction so as to engage the teeth 39 and 42,the gear 35 will be driven whereas if the sleeve is moved in the otherdirection, the teeth 31 and 4| will engage and the gear 38 will bedriven. The gears 35 and 36 mesh with a ring type bevel gear 44 but theengagement is at diametrically opposite sides of the ring gear so thatthe ring gear will be driven in opposite directions depending upon whichbevel gear is driven by shaft 21.

Now directing attention to Fig. 1 again, the ring gear 44 has a hubportion 45 iournalled in a bearing 46 forming part of the casing 12 andsuch hub has clutch teeth 48 on its end opposite the gear. The teeth 49are adapted to engage clutch teeth 49 on a second clutch sleeve 51 andthis clutch sleeve has a spline engagement 52 with a shaft 53 having itsinner end Journalled in a bearing 54 within the gear hub 45. At itsopposite end the sleeve 5| has clutch teeth 56 which are engageable withclutch teeth 51 on one end face of a relatively large gear 59 journalledon the shaft 53. Such gear 59 meshes with a smaller pinion 60 which iskeyed to the shaft 20 and consequently the large gear 59 is constantlybeing rotated at a relatively higher speed in relation to worm reduction24-25 at all times.

The shaft 53 extends through the casing wall next to the partition H andis journalled in a bearing 64 in such wall, and outwardly of the wall ithas a splined engagement 65 with a sleeve 66. This sleeve fits within anouter sleeve 91 and between the sleeves a cylindrical layer of rubber 69is provided which is bonded to both sleeves so that the drivingconnection between the shaft and outer sleeve 61 is of resilientcharacter. The sleeve 61 is adapted by suitable means to be connected tothe washing machine cylinder so that the cylinder will be turned byshaft 53 as the latter is driven.

At its inner end the sleeve 81 is ,iournalled in a bearing 1| mounted,in a hub 12 having a portion 14 extending through the partition I l.Such hub is rigidly connected to the partition by a flange 15 at thatside of the partition where the clothes cylinder is located and by a nut16 threaded on the opposite end of the portion 14 and which is locatedat the opposite side of the partition.

' .While the hub 12 provides a bearing support for the sleeve shaft 61,it is to be noted that the bearing 1| is of such character that thesleeve may move so as to align itself with the axis of the clothescylinder. A suitable sealing means 11 is provided in the hub 12 and nextto the shaft 81 so as to prevent water from leaking along the shaft,

It may be noted in general now that if the clutch sleeve 40 is in oneposition so that the ring gear 44 is being driven in one direction, thewashing machine cylinder will be rotated providing the clutch sleeve BIis in engagement with the ring gear and the direction of rotation willdepend upon Whether or not the clutch sleeve 40 is in engagement withthe teeth on 'the bevel gear 45 or in engagement with the teeth on thebevel gear 39. Reversing rotation of the ring gear will continue at alltimes but if the clutch sleeve 5| isshifted so as to engage the teeth 56with the teeth 51 on the large pinion 69, the cylinder will Ithen berotated in one direction only and at relatively high speed. During thewashing and rinsing stages of the machine operation,

, rection, cam means are provided for shifting the clutch sleeve 48 atpredetermined intervals for obtaining this reversal of rotation.-Referring again to Fig. 2 in particular, a cam shaft 88 is providedbelow the shaft 21 and this shaft is journalled in opposing side wallsof the casing as. indicated at 8| and 82. Outwardlyof the casing at oneside, the shaft 88 has a worm 84 as best shown byFig. 3, and this wormmeshes I with a second worm 85 mounted on ya vertically disposed shaft81 located externally of the easing and journalled in bearing portions88 and 89 secured respectively to the casing and cover 38. Such shaft 81intermediate its upper and lower ends has a worm wheel 98 thereon whichmeshes with a worm 9i on an external end of shaft 21.

From this it should follow that shaft 21 will drive shaft-31 and in turnshaft 81 will drive the cam shaft 88.

Within the casing the shaft 88 has a shell 95 provided with end portions96 and 91 slidably journalled on the shaft and this shell has anextension 98 on its upper side. Such extension is rigidly secured as byscrews 99 to a clutch shifting bar I8I having, as best shown by Fig. 7,a fork I82 straddling the sleeve 48 and disposed in an annular grooveI84 in such sleeve. This relationship between the shell 95 on shaft 88and the bar I 8| engaging the sleeve 48, holds the shell 95 againstturing on the shaft. The clutch sleeve shifting bar I8I extendsdownwardly within the that drying may I The two tapers HI and III merelyprovide means for moving the roller at each half turn of the shaft 88while the rims H8 and III provide means for positively holding theroller against a return axial movement until the roller is ready toengage the next taper. Thus while one rim is in contact with the roller,the clutch sleeve 48 is positively held in one engaged position and thenas the roller contacts the next taper, movement of the clutch sleeve ispositively initiated and after it is shifted to engagement with theother bevel gear, the roller maintains its axial shell 95 and at itslower end is provided with a roller I86 andv this roller co-operateswith a cam indicated generally at--I81. This cam is provided for thepurpose of positively initiating disen-' gagement of the'teeth M orteeth 42, as the case may be, from the teeth on the bevel gears and 36,and this is desirable particularly in View. of the fact that there isconsiderable frictional resistance to the disengagement of the teeth.

With reference now to Figs. 9, 10 and 11, the cam is drivingly securedand keyed to a sleeve I88 fastened to the shaft and such cam includestwo somewhat less than semicircular rim portions H8 and III which areseparated at their ends by gaps H2 and H3. Such semicircular rimportions are axially adjacent and'not in the same radial plane, but theleft side of the rim portion H8, as seen in Fig. 11, is approximately inthe radial plane of the right side of rimportion III. One end of the camportion H8 has a bevel or taper H5 leading to the gap I I3 while theother rim portion has a ta er H6 leading to the gap H2. Assuming thatthe cam is turning around the axis of the shaft 88 and that the rolleris in contact with the side of rim H8, such contact will continue untilthe gap H2 reaches the roller. As the gap passes the roller. the cam H6engages the roller and shifts it axially until it is at the side of rimIII and then it travels along the side of this rim until it reaches thegap H3. Then when the gap H3 passes the roller, the taper H5 shifts theroller'until it is again in position to roll along the side of rim H8.

position at the side of the other rim until it engages the next taper onthe cam.

While the two tapers H6 and H6 thus provide a means for shifting theclutch sleeve 48, the movement is relatively slow and it is not desiroutof engagement by the tapers for thereason that the load would be all ona small portion of the teeth just before complete disengagement occurs.It is desirable that the tapers on the cam merely initiate disengagementof the clutch teeth so as to overcome the considerable forces offriction between the teeth and then that the teeth be rapidly disengagedand the sleeve moved quickly from one position to thejother. The meansfor effecting this rapid shifting of the clutch sleeve comprises a pairof cam elements- I28 and I2I secured on the sleeve I88, and such camelements are identical but displaced relatively 180".

As best shown by Figs. 2 and8, each cam element has an axially extendingrim I22 extending substantially through 180" and this rim has a risingportion I23 at one end while its other able that the clutch teeth becompletely moved end drops off sharply at the point indicated at I24.The cams are adapted to co-operate with a roller I26 on oneend of a leafspring I21- which is connected to the projection 98 by screws or boltsI28. The roller I26 and spring arm shown in broken lines in Fig. 2 areabove the plane of the paper andin the position shown, the roller is incontact with the-cam I2I. As thus arranged, the leaf spring is flexedsubstantially to the left so that it urges the clutch sleeve 48 to theleft. However, the clutch sleeve 48 cannot move tothe left until.theroller I86 is at the end. of cam rim III or in other words when theroller is at the gap I I3 as seen in Fig. 10, and when it. is at suchgap,. the taper vHS positively initiates movement of the clutch sleeve.As soon as movement is initiated, the built up spring force in leaf'spring I21 acts quickly to throw the clutchsleeve to the left so as tocause the teeth 31 and H to disengage and the teeth 38 and 42 to engage.Following this movement the roller I86 is at the side of cam surface H8which prevents return movement of the clutch sleeve. As the camscontinue turning, the cam I2I leaves the roller and then the rise I23 oncam I28 engages the roller. This causes the spring to, flex in theopposite direction and to Directing attention now to Fig- 1, a secondcam shaft I38 is journalled at its ends in side walls of the casing asindicated at HI and I32,'and this cam shaft is driven by a gear trainshown by Figs 2-.and 3. At its upper end the vertical shaft 81 has aworm I84 which'meshes with a worm I88 on a short horizontal shaft I38disposed in an opening I31 in the side wall of the casing. The shaft I38also has a pinion I38 next to the worm wheel I38 as shown by Fig. 3, andthe pinion meshes with a pinion I40 mounted on a shaft I in the casing,and in turn the pinion I40 meshes with a pinion I43 on the cam shaftI30. Thus the cam shaft I80 is driven by the shaft 81 and thearrangement of pinions is such that the cam shaft rotates very slowly,as for example, turning through one revolution in forty-five minutes.

The shaft I30 as shown by Fig. 1 has a shell I45 similar to the shell 85and this shell is mounted on the cam shaft for axial movement thereon.In this case the shell has a projection I48 extending downwardly, and anarm I41 secured by screws I48 to the projection has a forked shapedlower end shown by Fig. 6 slidably fitting in a groove I49 in the clutchsleeve 8i. Thus if the shell I48 shifts axially, the clutch sleeve 5|will shift likewise. The clutch sleeve shifting means generally issimilar to the clutch shifting means on shaft 80 but differs in twoparticular respects in that shifting of the clutch sleeve 5i is notpositively initiated although it could be if desired, and secondly, inthat means are provided for bringing the clutch sleeve into neutralposition at the end of the drying operation. The reason for notpositively initiating movement of this clutch sleeve is that it does notseem to be necessary as .the friction forces holding the clutch sleevein engagement are less and more easily overcome by the spring actionprovided.

The bar I41 projects into the shell I45 an cooperates with a holdingmeans generally indicated at I80, and this holding means includes asleeve I58 fastened to the shaft I30 as by set screws and a bushing I8Ikeyed to the sleeve and having a rim I82 at its center. As best seen inFig. 16, the rim I82 has a gap I83 at one point and a second gap I84which is wider than gap I63 and has its bottom extending tagentially tothe periphery of the rim. The two gaps provide spaces for the end of thebar I41 to shift axially from one side of the rim I82 to the other atpredetermined times.

The means for shifting the shell I45 and bar I41 comprises a pair of camelements I88 and I6! secured to the cam shaft I30 and which are adaptedto co-operate with a roller I68 mounted on the end of a leaf spring I89secured to the projection I48 by screw means I84. The two cams I81 andI88 are shown in Figs. 14 and 15 and such cams have rims I and HI,respectively. These rims are provided with. rising surfaces atprearranged locations to cause th spring arm to flex in one direction orthe other as the case may be. With the clutch ii in its right handposition, the spring roller I88 in riding over the rising cam surface oncam I81 flexes the leaf spring to the left and then when the gap I83 inthe rim I62 on element I6I reaches the arm I41, the end of the latter israpidly moved through the gap in an axial direction due to the springaction so as tocause the teeth 58 and 51, to engage. Continued turningof the bushing I8I in the clockwise direction as seen in Fig. 16, causesthe gap I84 to become aligned with the arm I41 and in the meantime thespring roller I88 has been flexed to the right by the cam I88.

, This causes the arm to now shift through the gap I84.

It might be mentioned at this time that the clutch sleev 8| is shiftedto the right from its high, drying speed position only at the end of thedrying operation and at this particular time, it is desirable to havethe clutch sleeve stop in a Fig. 16. Hence, when the end of the bar I41first moves through the gap, it engages the lip I18 and the clutchsleeve stops. This leaves the parts in neutral position and as will beseen presently, th motor is stopped at this particular time and theentire drive unit ceases to operate.

Subsequently upon starting the motor by an auxiliary starting circuit,the cam shaft will rotate sufflciently to move the lip I18 away from thearm I41 and then the arm will complete its movement through the gap I64until it is at the right side of the rim I82 and this automaticallythrows the clutch teeth 48 and 49 into engagement. Operation of themachine with the teeth and 49 engaged then continues until the gap I63reaches the ,arm I41 and then th clutch sleeve is shifted to the leftand the arm I41 'moves along the left side of rim I82 until the gap I84is again reached. It might be noted in connection with Fig. 16 that theclutch sleeve will be held at the right for a much longer period 40 oftime due to the major circumferential distance between the gaps I63 andI84 whereas the clutch will be held at its left hand position for dryingthe clothes for a relatively short period of time due to the shortcircumferential distance between the gaps.

In order to insure rotation of the washing machine cylinder in the samedirection as it is to rotate during drying at the time shifting of theclutch sleeve is to occur, a synchronizing interlock is provided whichis best shown by Figs. 4 and 5. This interlock comprises a bell crank Ipivoted as indicated at I8I on a cross shaft I8I in the casing and whichhas a lower end I82 contacting a cam I83 on the lower cam shaft 80. Theopposite end of the bell crank has a notched portion I88 which isadapted to engage a lip I88 on the clutch shifting arm I41. A spring I89looped about the shaft I8I and engaging a fixed pin I90 at one end and apart of the bell crank at its other end, urges the crank intointerlocking engagement with the lip I88 on the arm I41. The cam I 83 isso related to the reversing cam means on the shaft 80 that the arm I41is held in its right hand position as seen in Fig. 1 or in other words,in a position where the teeth 48 and 48 are engaged, until th ring gear44 is turning in the same direction as the high speed driving pinion 59is turning. Thus if the arm I 41 reaches the gap I 83 and is about to beshifted by the leaf spring I89 but the ring gear 44 is turningoppositely to the high speed gear59, the notch I81 will be in engagementwithth lip I88 onarm I41 and will prevent the shifting action. However,as soon as the lower cam shaft 80 has turned sunlcientlyto effect areversal of rotation of ring gear 44, the cam is will have shifted themotor, a cam 200 is provided-on the upper cam shaft I30, and this camhas a cam surface 20l engageable with a cam roller 202 on a-verticallymovable pin 203 extending upwardly through a cover 205 onthe casing. Asbest shown by Fig. 17, the vertically movable member 203 engages an arm206 on top of the cover which is pivoted at 201 thereon, and this arm isprovided for opening and closing a drain valve for the r tub. The samedrain valve means otherwise may be employed as is embodied in mycopending application for patent identified, and generally it might bementioned that when the member 203 is raised, the drain is open and whenit isin its lower position, the drain is closed. It will be noted thatthe drain cam l has a long cam surface 200v permitting the drain valvetobe closed for a long period and it is during this time that theclothes are washed. The drain cam also has four raised portions 2l0, 2H,2l2 and H3 which respectively open the drain valve at the, end of thewashing operation, then at the end of the first rinse, at the end of thesecond rinse, and then at the end of the third rinse. operations thevalve, of course, is closed. It should be observed that at the end ofthe third rinse the drain is opened for a substantial period by the rise2 l3 on the cam so that it will. be open during the drying operation.

The cam 200 also includes a cam portion 2| 5 which is provided with asingle notch 2"; for allowing a switch actuating element 2| 1 to moveinwardly into the notch. When this switch element 211 is movedoutwardly. a switch indicated at 220 is closed and this closes the motorcircuit.-

When the element 2l1 drops into the notch 2l6, however. the motor isstopped. As stated before,

- an auxiliary circuit is provided for starting the motor so as to causethe cam shaft lto turn sufliciently as to move the switch operatingelement 2l1 outwardly and thus close the primary motor circuit. Fromthis it should be "under- .stood that the primary motor circuit isclosed until the switch operating element 2" drops into the notch 2l6and then in order, to start the cam shaft turnin again sufiiciently tomove the switch operating element out of the notch 2l6, the auxiliarymotor circuit is closed and remains closed until the primary circuit isclosed.

. 10 ally in as much as particular reference is directed to it in mycopending application for patent.

The valve 250 controls the inlet of water to the tub at a temperature of140 while the valve 1" controls the inlet of water of water at 100.

Referring to/Fig. 21 and assuming that "the. cam 230 is movingdownwardly with respect to.

the valve controlling'elements 235 and 236, it is apparent that thefinger 231 will not be engaged by any of the recesses'and that thefinger 230 ,will drop into all the recesses in circumferential order.This means that all the water sup- I plied to the tub will have atemperature of 100. However, if the cam 230 is shifted to the left ashort distance, it will be seen that the finger 231 will be engaged bythe recesses 233, 232, and NI but not by the recess 234, and that thefinger 238 will be engaged by the recess 234 and not by the others. Thismeans then that water will flow into the tub at 140 temperature at threestages whereas at the other stage as noted by the recess 234, water willfiow into the tub at 100.

Now relating the foregoing to Fig. 17, the .recess 23l is so positionedthat initially when the motor is turned on to start the washing machineoperation, one of the fingers will drop into the perature will againenter the tub when recess Between such It does not seem necessary toshow such circuits v as they will be readily understood by those skilledin the art.

For causing water to enter the cylinder, another cam 230 is provided onthe camshaft I30 and this cam, as best shown by Fig. 21 in de-' velopedform, has four recesses 23l, 232, 233 and 234 which are adapted toco-operate with spring 232 reaches the, valve controlling finger, andthis water will be used in the first rinse. After the first rinseoccursand the rinse water is drained, the next recess 233 will reach thefinger and the second rinse water at the, same selected temperature willflow into the ,tub. When the third vrinse is to occur, however, therecess 234 will engage only the finger 233 and hence the thirdrinsewater will always be at the lower temperature of 100. For normal washingoperations, the finger 231 will control all washing operations exceptingthe last rinse. However, for washing woolens, the finger 236 willcontrol all washing operations so as to deliver water at a.

lower temperature.

The cam 230 is shiftable from one position to the other, as best shownby Fig. 1, by'means of a turnable pin 240 projecting downwardly throughthe casing cover 35, and this pin has at its lower end an eccentric pinprojection 241 arranged in an annular groove 242 in the cam. By turningthe pin 240. the cam 230 thus can be shifted axially from one positionto the other..-

The pin 240 is suitably connected to an operating element 243 which mayextend to an external point on the washing machine cabinet.

Now referring to Fig. 22, the pulley l9 about which the belt I8 istrained comprises a hub 250 keyed to the external end of shaft20 andsecured thereon .by a bolt 25! extending through a washer 252 in anenlarged portion 253 of the openin in finger elements 235 and 236. Thesefinger elements have lip portions 231 and 238 engageable with the camand other lip portions 240 and 2 which contact plungers 243 and 244,respectively. Such plungers are slidably mounted in a closure' or cap245 held securely by bolts 246 to the cas-- ing wall and respectivelyoperate water control ling valves 250 and 25l. It seems unnecessary todiscuss this valvein detail here except generthe hub. The inner end ofthe hub 250 has an outwardly directed radical flange 255 and next tothis flange a ring'256 is disposed on the hub. The pulley includes twopositively driven disk elements 251 and 250 having a keyed engagementwith the hub 250 and the disk 251 is disposed next to the ring 256.Between two disks 251 and 258, two other disks 260 and 261 are providedand these at their outer ,edges form an annular groove for the belt l8.At their inner edges, the disks are disposed on a short sleeve 263slidably fitting the hub between the disks 251 and 258 and such sleevehas a central, annular "260 and 26! apart. Friction plates 268 and 289are disposed between the disks 251 and 280 and between the disks 258 and261, respectively, and the disks 2% and 26! have struck out tongues 210and 21! for holding the friction plates concentric to the hub. Outerportions of the disks 251 and 258 have circumferentially spaced fingers218 projecting into the openings in the friction plates so as todrivingly lock them together.

All of the disks are held on the hub by a Washer 216 engaging the outerside of the disk 258 and by a nut 211 threaded on the outer end of thehub. Only the outer margin of the washer 218 engages the disk asindicated at 280, and from this it follows that tightening of the nut211 places a resilient pressure against the disk so as to in turn placea resilient pressure on the friction plates and the disks on oppositesides thereof. In this way the friction between the plates and disks maybe adjusted.

It is evident when the disks 260 and 2B! are rotated by'the belt, thatthe disks 251 and 258 normally will rotate therewith and hence, the

shaft 20 will rotate. It will be recalled that the shaft is is connectedto the clothes cylinder driving shaft 61 by a rubber sleeve so that anyshocks such as occur when the shaft 53 isreversed in direction will becushioned. At the same time, however, the pulley l9 provides a slippageconnection which allows the shaft 53 to slow up or change its speedtemporarily relative to the driv in that the cylinder is first turned inone .direction and then in the other during the washing and rinsingstages, and then is turned at high speed during the drying stage. Wateris introduced into the cylinder-at the beginning of the washingoperation and at this time the drain is closed and then at the end ofthe washing operation the drain valve opens and remains open to allowthe water to drain from the tub. Following this action the'drain valvecloses and fresh water enters the tub for a period of time so as toeffect a first rinsing of the clothes. After a short rinsing period, therinse water is drained and then. the rinsing operation is repeated 9.second and third time, and after the third rinse, the drain valveremains open' and the cylinder is rotated .at high speed in a singledirection. This high speed rotation always. is initiated when thecylinder is turning in its slow speed stage in the same direction as itturns or rotates at high speed, and in the present embodiment after thefinal rinsing stage. Consequently the high speed dry picks up thecylinder when it is already roing of the washing operation is eil'ectedby an auxiliary motor circuit which may be of conventional character andthen after a short period of time, the switch operating cam in themecha- 5 nism closes the motor switch 220 and thereafter the switchmaintains control of the motor until it is again stopped at the end ofthe drying stage.

Although only one form of the invention has been illustrated anddescribed in detail, it will be apparent to those skilled in the artthat various'modifications may be made without departing from the scopeof the claims.

What is claimed is:

1. In a clothes washing machine having a rotary clothes receivingcylinder, a power operated drive means for turning the cylinder, slowspeed mechanism for transmitting from the drive means to the cylinderrotational motion at slow speed repeatedly first in one direction andthen in another direction through a predetermined slow speed stage, highspeed mechanism for transmitting from the drive means to the cylinderrotational motion at a relatively high speed in one direction only afterthe slow speed stage, and means timed to maintain said high speedmechanism out of operation until after the slow speed stage and at atime when the cylinder is rotating at slow speed in the same directionas it rotates at high speed.

2. In a clothes washing machine having a rotary clothes receivingcylinder, a power operated drive means for rotating the cylinder, slowspeed means for transmitting from the drive means to the cylinderrotational motion at slow speed re- 85 peatedly first in one directionand then in another direction through a predetermined slow speed stage,high speed means for transmitting from the drive means to the cylinderrotational motion at a relatively high speed in one direc- 40 tion, andcontrol means timed to bring said high speed means into operation onlyafter the slow speed stage and at a time when the cylinder is rotatingat slow speed in the same direction as it rotates at high speed.

3. In a clothes washing machine having a rotary clothes receivingcylinder, power operated drive means for turning the cylinder including*slow speed gear means and high speed gear means, said high speed gearmeans being operative to rotate the cylinder at relatively high speed,control means for reversing the direction of rotation of said slow speedgear means to cause the cylinder repeatedly to turn slowly first in onedirection and then in the other through one stage, means for shiftingthe drive from said slowspeed gear means to said high speed gearmeans,.and means for correlating the action of said control means andshifting means so that said shift will occur only after the slow speedstage at a time when the slow speed gear means is rotating in the samedirection as the high speed gear means. i

4. In a clothes washing machine having a rotary clothes receivingcylinder,power operated drive means for turning the cylinder includingslow speed gear means and high speed gear means, said high speed gearmeans being operative to rotate the cylinder at relatively high speed,control means for reversing the direction of rotation of said slow speedgear means to cause the cylinder repeatedly to turn slowly first in onedirection and then in the other-through one stage, means for shiftingthe drive from said slow speed gear means to said high speed gear 13means, and means operable in timed relation to said control means forcausing said shift to occur only after the slow speed stage and at atime when the slow speed gear means is rotating in the same direction asthe high speed gear means.

5. In a clothes washing machine having a rotary clothes receivingcylinder, power operated drive means for turning the cylinder includingslow speed gear means for rotating the cylinder relatively slowly andhigh speed gear means for rotating the cylinder at relatively high speedin one direction, control means for reversing the direction of rotationof said slow speed gear means at timed intervals to cause the cylinderrepeatedly to turn first in one direction and then in the other througha predetermined slow speed stage, and control means operative to causethe drive to be transmitted by said drive means through said high speedgear means and operable in timed relation to said first named controlmeans so as to cause said cylinder to commence rotation at relativelyhigh speed in one direction only after said slow speed stage and whenthe high speed gear means is rotating in thesame direction as the slowspeed gear means.

6. In a clothes washing machine having a rotary clothes receivingcylinder, a power operated drive means for turning the cylinder, slowspeed mechanism for transmitting from the drive means to the cylinderrotational motion at a relatively slow speed, control means for causingthe drive means through said mechanism to turn the cylinder repeatedlyfirst in one direction and then in the other direction through apredetermined slow speed stage, high speed mechanism for transmittingfrom the drive means to the cylinder rotational motion at a relativelyhigh speed in one direction, and means for correlating the action ofsaid control means and high speed mechanism so as to bring the latterinto operation only when the cylinder is rotating after its slow speedstage in the same direction as it rotates at said high speed.

'7. In a clothes washing machine having a, rotary clothes receivingcylinder, a power operated drive means for turning the cylinder, slowspeed der in its slow speed stage is turning in the same direction ,asit turns in the high speed stage.

9. In a clothes washing machine having a rotary clothes receivingcylinder, a power operated drive means for turning the cylinder, slowspeed control means co-operating with the drive means for causing thecylinder repeatedly to turn first in one direction and then in the otherthrough one stage, high speed control means co-operating with the drivemeans for causing the cylinder to rotate at a relatively high speed inone direction only after the slow speed stage, and means for modifyingthe operation 01' the high speed control means so as to delay the highspeed operation until the cylinder is in a predetermined phase ofitsslow speed stage.

10. In a clothes washing machine having a rotary clothes receivingcylinder, a power operated drivemeans for turning the cylinder, slowspeed control means co-operating with the drive means for causing thecylinder repeatedly to turn first in one direction and then in the,other, high speed control means co-operating with the drive means forcausing the cylinder to rotate at a relatively high speed in onedirection only after the slow speed stage, and means for preventing theoperation of thehigh speed control means when the receptacle in its slowspeed stage is turning in a direction opposite that in which it willturn in its high speed operation.

11. In a clothes washing machine having a rotary clothes receivingcylinder, motor operated drive means for turning the cylinder, clutchmeans for controlling the rotation of the cylinder so that during onestage of operations the cylinder-will rotate slowly first in onedirection and then in the other in a repeating manner, clutch means forcontrolling the rotation of the cylinder during another stage ofoperations so that the cylinder will rotate at a relatively high speedin one direction only, and means for moving the clutch means to shiftfrom the slow speed stage mechanism for transmitting from the drivemeans to the cylinder rotational motion at a relatively slow speed,control means for causing the drive means'through said mechanism to turnthe cylinder'repeatedly first in one direction and then in the otherdirection through a predetermined slow speed stage, high speed mechanismfor transmitting from the drive means to the cylinder rotationalmotionat a relatively high speed in one direction, means for shiftingthe drive from said slow speed mechanism to said high speed mechanism,and cam means for restraining operation of said shifting means to effectsuch shift until completion of said slow speed stage and only at a timewhen the cylinder is rotating in its slow speed stage in the samedirection as it rotates at said high speed.

8. In a clothes washing machine having a. rotary clothes receivingcylinder, a power operated drive means for turning the cylinder, slowspeed control means co-operating with the drive means for causing thecylinder repeatedly to turn first in one direction and then in the otherthrough one stage, high speed control means co-operating with the drivemeans for causing the cylinder to rotate at a relatively high speed inone direction only after the slow speed stage, and means for preventingthe operation of the high speed control means, except at a time when thecylinto the high speed stage of operations only when the cylinder isturning in thee same direction it will turn during the high speed stage.

12. In a clothes washing machine having a rotary clothes receivingcylinder, motor operated drive means for turning the cylinder, clutchmeans for controlling the rotation of the cylinder so that during onestage of operations the cylinder will rotate slowly first in onedirection and then in the other in a repeating manner, clutch means forcontrolling the rotation of the cylinder during another stage ofoperations so that the cylinder will rotate at -a relatively high speedin one direction only, means for moving the clutch means so as to changefrom the slow speed stage to the high speed stage of operations, and cammeans for preventing the change to high speed operation when thecylinder is turning in a direction opposite that in which it is to turnin th high speed stage. 13. In a clothes washing machine having'arotary-clothes receiving cylinder, a drive .unit for rotating thecylinder, means including a double acting clutch in the unit and,movable back and forth between two positions for modifying rotarymovement of the cylinder, means positively preventing movement of theclutch from either position .to' the other except at predetermined timesand then acting to release the clutch for movement, cam means forpositively initiating movement of the clutch at said predeterminedtimes, and spring means independent of the movement 14. In a clotheswashing machine having a rotary clothesreceiving cylinder, a drive unitfor rotating the cylinder, means including a clutch in the drive unitmovable between two positions for modifying rotary movement of thecylinder, means for positively holding the clutch in a clutch engagedposition during a predetermined time and then operating to place theclutch in a fully releasable condition, cam means acting to graduallydisengage the clutch immediately prior to the clutch being placedin afully releasable condition, and spring means independent of the movementpreventing means for continuing the disengagement oi the clutch afteroperation of the cam means.

15. In a clothes washing machine having a rotary clothes receivingcylinder, a drive unit for rotating the cylinder, a double clutch in thedrive unit and including a clutch member movable between two engagedpositions where with the member in one position the cylinder movesslowly and where in the other position the cylinder rotatesrapidly,means positively preventing disengagement or the member from eitherengagement except ata predetermined time and then acting to permitmovement of the clutch member to its other position, spring means actingto move the clutch member from one position to the other when suchmovement is permitted, and means associated with and adapted to engageand temporarily hold the clutch member in an intermediate, neutralposition when it is moved from the position. where rapid rotation of thecylinder has occurred.

16. In a clothes washing machine having a rotary clothes receivingcylinder, motor operated drive means for turning the cylinder, clutchmeans in said drive means and movable between two positions foreffecting reversing rotation of the cylinder in a repeating manner, asecond clutch means in said drive means and movable between twopositions wherein in one position the cylinder is driven in thementioned reversing manner and in the other position it is driven at arelatively high speed in one direction only, cam means for effectingperiodic reversing of the first clutch means. cam means for controllingmovement of the second clutch means so that the cylinder can be drivenfirst in a reversing manner and then in the one direction at higherspeed, cam means for correlating the action of the two clutch means sothat the second clutch means is shifted into its high speed positiononly when the first clutch means is in a position where the cylinder isturning in the same direction as it is to turn in the high speed stage,and means {or driving all cam means in properly timed rela- 17, In aclothes washing machine having a rotary clothes receiving cylinder,motor operated drive means for turning the cylinder, clutch means insaid drive means and movable between two positions for effectingreversing rotation of the cylinder in a repeating manner, a secondclutch means in said drive means and movable between two positionswherein in one position the cylinder is driven in the mentionedreversing manner and in the other position it is driven at a relativelyhigh speed in one direction only, cam means for effecting periodicreversing of the first clutch means, cam means for controlling movementof the second clutch means so that the cylinder can be driven first inareversing manner and then in the one direction at higher speed, cammeans for modifying the action of one of the first two cam means so thatthe second clutch means is shifted into its high speed position'onlywhen the first clutch means is in a position where the cylinder isturning in the same direction as it is to turn in' the high speed stage,and means for driving all cam means in properly timed relation.

18. In a clothes washing machine having a retary clothes receivingcylinder, motor operated drive means for turning the cylinder, clutchmeans in said drive means and movable between two positions foreffecting reversing rotation of the cylinder in a repeating manner, asecond clutch means in said drive means and movable between twopositions wherein in one position the cylinder is driven in thementioned reversing manner and in the other position it is driven at arelatively high speed in one direction only, driven control means foreffecting periodic reversing of thelfirst clutch means, control meansfor governing movement of the second clutch means so that the cylindercan be driven first in a reversing manner and then in the one directionat higher speed, driven control means for correlating the action of thetwo clutch means so that the second clutch is shifted into its highspeed position only when the first clutch means is in a position wherethe cylinder is turning in the same direction as it is to turn in thehigh speed stage, and means for driving all control means in properlytimed relation;

19. In a clothes washing machine having a rotary clothes receivingcylinder, motor operated drive means for turning the cylinder, clutchmeans for controlling the rotation of the cylinder so that during onestage of operations the cylinder will rotate reversely first in onedirec- 40 tion, and then the other in a repeating mannner,

means including a clutchmovable between two positions for controllingthe rotation of the cylinder so that with the clutch in one position thecylinder is driven in the reversing manner and when in the otherposition it is driven at a relatively high speed in one direction, acontrol element for shifting the second mentioned clutch means from oneposition to the other, control means for shifting the elementautomatically between said two positions during'operation of themachine, and means for preventing movement of the element when thesecond mentioned clutch is to be shifted to its relatively high speedposition until the cylinder is turning in the same direction in itsreversing stage as it is to turn in its high speed stage.

20. In a clothes washing machine having a rotary clothes receivingcylinder, motor operated drive means for turning the cylinder, clutchmeans for controlling the rotation of the cylinder so that during onestage of operations the cylinder will rotate reversely first in onedirection and then the other in a repeating manner, means including aclutch movablebetween two positions for controlling the rotation of thecylinder so that with the clutch in one position the cylinder is drivenin the reversing manner and when in the other position it is driven at arelatively high speed in one direction, a control element for shiftingthe second mentioned clutch means from one position to the other,control means for shifting the element automatically between said twopositions during operation of the machine, means including a driven camadapted to prevent movement of the element when the second mentionedclutch is to He shifted to its relatively high speed position until thecylinder is turning in the same direction in i,

reversing stage as it is to turn in its high speed stage.

HYMAN D. BROTMAN.

REFERENCES CITED The following references are of record in the flle ofthis patent:

UNITED STATES PATENTS Number Name Date Eden Sept. 3, 1912 Number

